武汉沌口长江公路大桥通航孔布置方案研究

文章通过对长江中游沌口水道航道条件、通航环境等因素进行分析,结合拟建沌口长江公路大桥的特点,在充分考虑桥梁技术难度及建设风险的情况下,从保障长江航道畅通及船舶通航安全角度出发,提出了(100+275+760+275+100)m桥跨方案的桥墩布置方案。     

景洪勐泐大桥通航问题研究

根据桥位选择的基本原则,结合桥区工程概况、航道条件等方面对正交及斜交2个桥位进行比较,得出景洪勐泐大桥斜交桥位为推荐桥位。通过对斜交桥位各桥型方案的通航净空尺度、桥墩位布置等因素对通航影响等方面进行研究,确定将330 m跨钢箱拱桥桥型作为推荐桥型。最后通过水流数值模拟并结合实测资料进行分析,分析建桥后对通航水流条件的影响情况, 从而更加确定推荐方案的合理性。     

长江干线南京以下12.5 m深水航道建设一期工程（太仓—南通）航道布置

为了给长江干线南京以下12.5 m深水航道建设一期工程(太仓—南通段)设计提供技术支撑,对该段航道的平面布置进行研究。通过分析航道建设标准、航道自然条件,结合航道布置原则、通航需求、通航环境,提出航道布置方案,确定航线布置、走向、转向角等参数,并分析该方案与船舶定线制的关系。     

长江下游口岸直水道鳗鱼沙心滩段选槽方案

为给口岸直水道12.5 m深水航道治理方案研究提供依据,在对鳗鱼沙心滩段航道条件和演变趋势进行分析基础上,考虑两岸港口岸线发展需要,确定了选择鳗鱼沙心滩段左槽为12.5 m深水航道、维持右槽10.5 m深水航道的选槽方案,并核算了在泰州公路大桥和在建航道整治工程影响下的航线布置要求.计算结果表明,12.5 m深水航线选择泰州桥左通航孔航行进入左槽,航线平顺,过渡较好,是较为稳妥的航线布置方案;但局部年份左通航孔航宽不足时,采用从泰州公路桥右侧主通航孔下行后往左槽过渡的方案也是可行的,但富余不多.     

韩家沱长江大桥方案选择与通航问题的研究

根据桥位选择的基本原则,在模型试验的基础上,从航道条件、河床演变、通航水流条件等方面对上、下桥位进行比较,得出韩家沱桥位（上桥位）为推荐桥位。通过对上、下桥位各桥型方案的通航净空尺度、桥墩位布置和施工因素对通航影响等方面进行研究,确定将韩家沱桥位432 m双塔斜拉桥作为推荐桥型。最后对建桥后的通航水流条件进行验证,并与建桥前进行比较,得出建桥后对库区航道通航影响较小,故韩家沱长江大桥方案选择合理可行。     

从通航角度论述鹅公岩大桥桥位及桥型方案方案的合理性

根据鹅公岩大桥桥区河段水工模型试验资料,分析了大桥修建前后桥位处的通航净空尺度,桥区河段上、下行水流条件及航道及尺度结果表明,鹅公岩大桥建桥后对通航影响甚小、鹅公岩大桥桥位及桥型方案是合理可行的。     

南京长江第五大桥主桥上部结构安装水上施工期航道布置调整与航标配布研究

本文通过分析南京长江第五大桥上部结构安装水上施工期对航道通航条件的影响,提出相应的航道布置调整与航标配布方案。     

万州长江公路大桥防撞设施工程通航论证*

三峡水库175 m蓄水后,万州长江公路大桥两端部分拱圈及立柱被淹没。一旦船舶失控或走偏航道碰撞拱圈和立柱,极易导致拱桥垮塌,引发极为恶劣的安全事故。针对大桥现状,创新提出了弧形水上升降式桥梁防撞装置,该装置能对拱桥易撞部位进行区域式防护,并能随水位变化而自动升降。主要通过物理模型试验并结合相关数值模拟分析拟建防撞工程建成后对桥区河段河床演变、通航净空尺度、通航水流条件以及船舶航行条件等的影响。     

佛耳岩作业区二期工程港池开挖对航道通航条件的影响分析

根据佛耳岩作业区二期工程港池开挖方案,采用二维水流数学模型对开挖后的航道水流条件变化进行预测分析,研究了港池开挖施工对航道布置、航标布设和船舶通航的影响,并考虑本河段航道条件及通航环境的复杂性,提出港池开挖的优化施工方案,可为类似工程设计和通航管理提供参考。     

浦仪公路过江通道上坝段桥梁主桥施工期航道布置调整和航标配布方案

为保障大桥施工安全和船舶通航安全,分析浦仪公路过江通道上坝段桥梁施工对航道通航安全的影响,按照大桥建设的主桥基础施工,主塔安装、钢箱梁存梁及安装,标准梁段吊装等3个阶段施工期,根据工程河段水深条件的变化及施工水域占用情况对航道布置及航标配布方案作出动态调整,为大桥施工安全和船舶通航安全提供技术保障。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

某海港码头的撞损修复

依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。